6690009396 has 72 divisors (see below), whose sum is σ = 18289457760. Its totient is φ = 1897656768.

The previous prime is 6690009367. The next prime is 6690009437. The reversal of 6690009396 is 6939000966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40806 + ... + 122658.

Almost surely, 2^6690009396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6690009396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9144728880).

6690009396 is an abundant number, since it is smaller than the sum of its proper divisors (11599448364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6690009396 is a wasteful number, since it uses less digits than its factorization.

6690009396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82013 (or 82004 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 48.

The square root of 6690009396 is about 81792.4776247792. The cubic root of 6690009396 is about 1884.2661338963.

The spelling of 6690009396 in words is "six billion, six hundred ninety million, nine thousand, three hundred ninety-six".